openssh: configuration updates

Rebase sshd_config and ssh_config with openssh upstream.
Check for the ed25519 key in the systemd keygen service.

(From OE-Core rev: 046dd5567d9de0596023846e7f0c6df7f01a9f5b)

Signed-off-by: Dan McGregor <dan.mcgregor@usask.ca>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/openssh/openssh/ssh_config

@@ -1,4 +1,4 @@
-#	$OpenBSD: ssh_config,v 1.25 2009/02/17 01:28:32 djm Exp $
+#	$OpenBSD: ssh_config,v 1.28 2013/09/16 11:35:43 sthen Exp $
 
 # This is the ssh client system-wide configuration file.  See
 # ssh_config(5) for more information.  This file provides defaults for
@@ -44,3 +44,5 @@ Host *
 #   TunnelDevice any:any
 #   PermitLocalCommand no
 #   VisualHostKey no
+#   ProxyCommand ssh -q -W %h:%p gateway.example.com
+#   RekeyLimit 1G 1h

meta/recipes-connectivity/openssh/openssh/sshd_config

@@ -15,9 +15,7 @@
 #ListenAddress 0.0.0.0
 #ListenAddress ::
 
-# Disable legacy (protocol version 1) support in the server for new
-# installations. In future the default will change to require explicit
-# activation of protocol 1
+# The default requires explicit activation of protocol 1
 Protocol 2
 
 # HostKey for protocol version 1
@@ -25,11 +23,16 @@ Protocol 2
 # HostKeys for protocol version 2
 #HostKey /etc/ssh/ssh_host_rsa_key
 #HostKey /etc/ssh/ssh_host_dsa_key
+#HostKey /etc/ssh/ssh_host_ecdsa_key
+#HostKey /etc/ssh/ssh_host_ed25519_key
 
 # Lifetime and size of ephemeral version 1 server key
 #KeyRegenerationInterval 1h
 #ServerKeyBits 1024
 
+# Ciphers and keying
+#RekeyLimit default none
+
 # Logging
 # obsoletes QuietMode and FascistLogging
 #SyslogFacility AUTH
@@ -45,7 +48,15 @@ Protocol 2
 
 #RSAAuthentication yes
 #PubkeyAuthentication yes
-#AuthorizedKeysFile	.ssh/authorized_keys
+
+# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
+# but this is overridden so installations will only check .ssh/authorized_keys
+AuthorizedKeysFile .ssh/authorized_keys
+
+#AuthorizedPrincipalsFile none
+
+#AuthorizedKeysCommand none
+#AuthorizedKeysCommandUser nobody
 
 # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
 #RhostsRSAAuthentication no
@@ -74,8 +85,8 @@ Protocol 2
 #GSSAPIAuthentication no
 #GSSAPICleanupCredentials yes
 
-# Set this to 'yes' to enable PAM authentication, account processing, 
-# and session processing. If this is enabled, PAM authentication will 
+# Set this to 'yes' to enable PAM authentication, account processing,
+# and session processing. If this is enabled, PAM authentication will
 # be allowed through the ChallengeResponseAuthentication and
 # PasswordAuthentication.  Depending on your PAM configuration,
 # PAM authentication via ChallengeResponseAuthentication may bypass
@@ -91,20 +102,22 @@ Protocol 2
 #X11Forwarding no
 #X11DisplayOffset 10
 #X11UseLocalhost yes
+#PermitTTY yes
 #PrintMotd yes
 #PrintLastLog yes
 #TCPKeepAlive yes
 #UseLogin no
-UsePrivilegeSeparation yes
+UsePrivilegeSeparation sandbox # Default for new installations.
 #PermitUserEnvironment no
 Compression no
 ClientAliveInterval 15
 ClientAliveCountMax 4
 #UseDNS yes
 #PidFile /var/run/sshd.pid
-#MaxStartups 10
+#MaxStartups 10:30:100
 #PermitTunnel no
 #ChrootDirectory none
+#VersionAddendum none
 
 # no default banner path
 #Banner none
@@ -116,4 +129,5 @@ Subsystem	sftp	/usr/libexec/sftp-server
 #Match User anoncvs
 #	X11Forwarding no
 #	AllowTcpForwarding no
+#	PermitTTY no
 #	ForceCommand cvs server

meta/recipes-connectivity/openssh/openssh/sshdgenkeys.service

@@ -3,6 +3,7 @@ Description=OpenSSH Key Generation
 ConditionPathExists=|!/etc/ssh/ssh_host_rsa_key
 ConditionPathExists=|!/etc/ssh/ssh_host_dsa_key
 ConditionPathExists=|!/etc/ssh/ssh_host_ecdsa_key
+ConditionPathExists=|!/etc/ssh/ssh_host_ed25519_key
 
 [Service]
 ExecStart=@BINDIR@/ssh-keygen -A